The Wooly adds Prima-Loft™ between the double walled bottle to create the most advanced insulated sports bottle on the market. Tests with leading brands are no match for the performance under heat and cold.
Beyond the insulation property, the Wooly uses polypropylene, a lighter weight more flexible material, molded at varying thicknesses for strength and flexibility, that put this bottle to the top of its class.
Material: Polypropylene Bottle; Prima-Loft™ Insulation
BPA FREE